... *20'DV) 5. Pipe manufacturer Key Words: Line pipe, gas pipe, oil pipe, water pipe and tube, plain end steel pipe, heating system pipe, floor heating pipe01 ... pressure liquids conveyance, such as water, gas, and construction, and support, structural use 06) MOQ: 25MT(1*20'DV) 07) Price ... B/L. 09) Formula for calculating the H.D.G. pipe weight: WT/Piece=(O/D—Wall Thk)*Wall Thk*0 ...